This function is a variant of WorldRoot/FindPartOnRay with the addition of an ignore list. This lets you ignore certain parts or Model|Models.

Those looking to utilize a whitelist instead should use WorldRoot/FindPartOnRayWithWhitelist.

Notes

• Theoretically, a ray extends infinitely in one direction. However, the max length of the direction vector on Roblox is 5000 studs.
• The length (magnitude) of the directional vector is important, as parts further away than its length will not be tested.
• If the ray does not intersect anything, the return values will be nil and the point at the end of the ray, respectively.
• Parts that are in a articles/Collision Filtering|collision group that does not collide with the “Default” collision group are ignored implicitly.